Stench-trap.



W. E. MILLER.

STERGH TRAP.

APPLICATION mum JAI- e. um.

1,065,706. Patented Julie 24, 1913 UNITED STATES P LENT OFFICE.

' WILLIAM E. MILLER. 0F SEATTLE, WASHINGTON.

STENCH-TRAP.

Specification of Letters Patent.

, Application filed January 6, 1913. Serial No. (40,296.

To all whom-"1' 6 may concern Be it known, that I, VVILLIAM E. Minuan, acitizen of the United'Stat-es, and a resident of Seattle, countyo-f-King, and State of Washington, have-invented certain new and usefulImprovements in stench-Traps, of which the following is a specification.

This invention, relates to stench traps, and has for its principalobject. to provide 'a device of this character which is of simple anddurable construction, not likely to get out a stench receiving chamber,which is'preferably circular in cross section and with whichcommunicates the pipe 2 in which is the check valve 3. The opposite endof the said pipe communicates with the rendering tank, or other stenchproducing source. Upon the opposite side of the chamber 1 is the pipe 4which leads to a drier, which is used in the meat packing industry. Insuch driers it is usual 'to employ fans which produce a constant currentof air over and around the product to be dried, and considerableunpleasant odor o-ften results from such process. This odor passesthrough the pipe 4 so long as the fans are in operation to createsufficient draft to keep the flap 5 open, and when there is notsufficient draft said flap drops byg ravity and thus closes the mouth ofthe pipe 4. The lower ends of the walls of the chamber 1 are suitablysecured to the floor, as by the bolts 6, a bottom plate 7interveningbetween the floor and the flange 8, through which the boltspass. Rising from the said plate is the pipe 9, near the bottom edge ofwhich are the perforations 10. The

top of the pipe 9 is closed by the screw cap ll. Vv'ithin the pipe 9,and passing through the plate 8 and the floor, is a second pipe 12, thetop of which is open, and to whose bot tom is attached the pipe l3 whichleads to a sewer. The top of the chamber 1 is parare the perforations27, and to the to Fig. 3 is a cross sectional view upon the line y.y ofFig. 1.

tially closed by the dome 14; which has the flange 15, the @said flangehein secured between the similar flanges 1.6 and Harpon-the walls of thecha nber land the upper chamber '18 respectively,and are there held inpo Patented June 24, 191 3.

sition by the bolt's lfl The dome 14; hasthe numerous presently'to -,3e'explained. 1 Extending from the walls of the upper chaml'ier 18 is theannular flange 21,between which and the simi- 'forations -20,-..1;on.-,a purpose lar flange 22, upon the walls of the top chamber 23, is theplate 24, secured in place by the bolts 25. Rising from the plate 24 isthe tube 26, near the bottom edge of which of which is affixed the screwcap 28. Within the pipe 26, and passing through theplate 24, is the pipe29, whose upper and lower ends are open. I secure the pipe 29 firmly tothe plate 24 by means of the annular flanged collar 30 and the rivets31. The upper end of the topchamber 28 is open and into it is directedthe pipe through which constantly flows a' stream of fresh'water. Thereis a definite and fixed relation between the caliber of the pipe 32-andthe apertures 27, in the pipei26, the apertures 20. in the dome 14and-the apertures 10 in the.

pipe 9, to theend that the fresh water pouring in through the pipe 32,does not empty through the said apertures and perforations withsufficientrapidityto prevent the space between the walls of thepipes'23and 29 filling-with water to about the level shown. The air abovethewater level within the pipe 26 tends to compress,- of course, but

finds its way out with some force through the bottom of the pipe 29,thence through the perforations 20, through-which also, of

course, passes the water which overfiow's from the pipe 26 into the pipe29 The stench entering the chamberl through the pipes 2 and d, or eitherof them, cannot find i its way out in'an upward direction because theoutlets in the dome 14 are the only'outlots in that direction and theyare kept constantly closed by the downwardly flowing fresh water, asabove described. The lower trap, consisting of the pipes 9 and 12 issubstantially a duplication of the upper. trap consisting of thcpipes 26and 29, and as the water flows downwardly through thepipe l2 and outthrough the pipe l3,it is followed by the offensive gases and carriedinto the sewer or to a sufficient distance from the" source of thestench so as not to interfere with the comfort of adjacent populateddistricts.

I have shown a particular form or embodiment of my invention, but I amaware that many minor changes therein will readily suggest themselves toothers without departing from the spirit and scope of the invention andI do not, therefore, desire to be limited to the exact form herein shownand described.

What I claim as new and desire to protect by Letters Patent is In astench trapping device, the combination of a main stench receivingchamber, a numerously perforated dome therefor, an

intermediate chamber into which said dome projects, a top chamber, a subchamber within said top chamber having inlet holes, a pipe within saidsub chamber and which communicates with said intermediate chamber,stench inlet pipes communicating wit-h said main stench chamber, a subchamber within the main chamber and a pi e Within said last mentionedsub-chamber wiiich communicates with an outlet pipe.

WILLIAM E. MILLER.

Witnesses FRED P. GoRIN, R. D. SMALLEY.

